About 37 percent of U.S. Saab dealers will close as part of General Motors Corp.’s planned sale of the ailing Swedish car brand to Koenigsegg Group AB, a GM spokeswoman said yesterday.

GM spokeswoman Ryndee Carney said the company had sent letters to 81 of the 218 U.S. Saab dealers notifying them they will be expected to terminate their dealerships when the sale closes around the end of November.